Synchronise currency setting

[Samyoul]

Implement functionality that handles the syncing of the currency setting.

Background

In status-go syncing of settings has been implemented, and additional setting sync should be a relatively straightforward process. The syncing of the currency setting has been implemented from the status-go side.

See status-im/status-go#2478 and #13053

However there is additional functionality that needs to be implemented on the status-react side to make currency work correctly.

See the QA report here ISSUE 6: Error on the synced device when changing currency

status-go Implementation

Currently the currency setting has its sync functionality disabled:

Currency = SettingField{
	reactFieldName: "currency",
	dBColumnName:   "currency",
	// TODO resolve issue 6 https://github.com/status-im/status-react/pull/13053#issuecomment-1065179963
	syncProtobufFactory: &SyncProtobufFactory{
		inactive:          true, // Remove after issue is resolved
		fromInterface:     currencyProtobufFactory,
		fromStruct:        currencyProtobufFactoryStruct,
		valueFromProtobuf: StringFromSyncProtobuf,
		protobufType:      protobuf.SyncSetting_CURRENCY,
	},
}

To reactivate the currency functionality in status-go simply remove the inactive field from the SyncProtobufFactory